on defense technique is a pick. that's when you guard another player that's going after the ball without calling a foul. Another defense technique is guard. That's when you gu…ard one players and one player only. you have to stay in front of him or her and copy their every move.

In the immune system, the first line of defense are mechanical and physical barriers, such as the skin and the cornea of the eye. The main line of defense, meanwhile, are …the innate immunity and acquired immunity of an organism.

The first defensive technique I learned was a lower block. This is done by gathering the fist at the the opposite ear (i.e. right fist, left ear; left fist, right ear) and swe…eping downward so the arm is just outside of your right (or left) side at about a 45 degree angle from your body.

Defensive driving means positioning one's car at the best possible point and being alert to everything on the road. So, for instance, one technique is to never be in the middl…e of a group or line of cars - you should be at the start or end of it. Another technique is to always drive on the outer lane of the freeway, so you can easily pull off the road and stop.